<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="../css/bootstrap.css">
    <link rel="stylesheet" href="../css/my.css">
    <title>Document</title>
</head>
<body>
    <div class="container">
        <div class="row">
            <div class="col-md-8 bg" style="background-color: #DDAC86;">第一行第一列</div>
            <div class="col-md-4 bg" style="background-color: #243C58;">第一行第二列</div>
        </div>
        <div class="row">
            <!-- offset-*-*可以让格子在指定断点向右偏移指定的列 -->
            <div class="col-md-8 offset-md-4 bg" style="background-color: #457495;">第二行</div>
        </div>
    </div>
    
</body>
</html>